Video wall

Diamond Vision was historically similar to Jumbotron in that they both used cathode-ray tube (CRT) technology, but with slight differences between the two.

[1][2][3][4][5][6][7][8] Screens specifically designed for use in video walls usually have narrow bezels in order to minimize the gap between active display areas, and are built with long-term serviceability in mind.

Video walls are sometimes found in control rooms, stadiums, and other large public venues.

[12] Video walls can also benefit smaller venues when patrons may view the screens both up close and at a distance, respectively necessitating both high pixel density and large size.

For example, the 100-inch video wall located in the main lobby of the Lafayette Library and Learning Center has enough size for the distant passerby to view photos while also providing the nearby observer enough resolution to read about upcoming events.

[14][15] The largest video wall as of 2013 was located at the backstretch of the Charlotte Motor Speedway motorsport track.

A video wall controller (sometimes called “processor”) is a device that splits a single image into parts to be displayed on individual screens.

The most simple example of video wall controller is single input multiple outputs scaler.

[18] Software-based PC & video-card controllers is a computer running an operating system (e.g., Windows, Linux, Mac) in a PC or server equipped with special multiple-output graphic cards and optionally with video capture input cards.

Though this approach is typically more expensive, the advantage of a software-based video wall controller vs the hardware splitter is that it can launch applications like maps, VoIP client (to display IP cameras), SCADA clients, Digital Signage software that can directly utilize the full resolution of the video wall.

Some video wall controllers can reside in the server room and communicate with their "graphics cards" over the network.

These sender/receiver devices are either via Cat5e/Cat6 cable extension or via a more flexible and powerful "video over IP" that can be routed through traditional network switches.

This means that video walls of different sizes and configurations, as well as individual digital displays can all show the same content at the same time, referred to as 'mirroring'.